$DSPSERV

Use the $DSPSERV macro to create or delete a data space. The following parameters are used to manage the data space:

NAME: is used to name a data space. This name can help you locate the data space in an IPCS dump.
STOKEN: names a register that will contain either the STOKEN that was created for the data space or the STOKEN of a data space you want to delete.
ALET: specifies the register or name of the storage area that contains the ALET of the data space to be deleted, or the register or name of the storage area to contain the ALET of a new data space.
BLOCKS: specifies the size (in 4K blocks) of the data space.

You can also specify if the data space is fetch protected (FPROT) or the owner of the data space (OWNER).

For additional information about data space usage, see the following publications: